<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<style>
  :root {
    --background-dark: #2d3548;
    --text-light: rgba(255, 255, 255, 0.6);
    --text-lighter: rgba(255, 255, 255, 0.9);
    --spacing-s: 8px;
    --spacing-m: 16px;
    --spacing-l: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 64px;
    --width-container: 1200px;
  }

  * {
    border: 0;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html {
    height: 100%;
    font-family: 'Montserrat', sans-serif;
    font-size: 14px;
  }

  body {
    height: 100%;
  }

  .hero-section {
    align-items: flex-start;
    background-image: linear-gradient(15deg, #0f4667 0%, #2a6973 150%);
    display: flex;
    min-height: 100%;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-l);
  }

  .card-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    grid-column-gap: var(--spacing-l);
    grid-row-gap: var(--spacing-l);
    max-width: var(--width-container);
    width: 100%;
  }

  @media(min-width: 540px) {
    .card-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media(min-width: 960px) {
    .card-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .card {
    list-style: none;
    position: relative;
  }

  .card:before {
    content: '';
    display: block;
    padding-bottom: 150%;
    width: 100%;
  }

  .card__background {
    background-size: cover;
    background-position: center;
    border-radius: var(--spacing-l);
    bottom: 0;
    filter: brightness(0.75) saturate(1.2) contrast(0.85);
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transform-origin: center;
    trsnsform: scale(1) translateZ(0);
    transition:
      filter 200ms linear,
      transform 200ms linear;
  }

  .card:hover .card__background {
    transform: scale(1.05) translateZ(0);
  }

  .card-grid:hover>.card:not(:hover) .card__background {
    filter: brightness(0.5) saturate(0) contrast(1.2) blur(20px);
  }

  .card__content {
    left: 0;
    padding: var(--spacing-l);
    position: absolute;
    top: 0;
  }

  .card__category {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-s);
    text-transform: uppercase;
  }

  .card__heading {
    color: var(--text-lighter);
    font-size: 1.9rem;
    text-shadow: 2px 2px 20px rgba(0, 0, 0, 0.2);
    line-height: 1.4;
    word-spacing: 100vw;
  }
</style>

<body>
  <link href="https://fonts.googleapis.com/css?family=Montserrat:400,700" rel="stylesheet">

  <section class="hero-section">
    <div class="card-grid">
      <a class="card" href="#">
        <div class="card__background"
          style="background-image: url(https://images.unsplash.com/photo-1557177324-56c542165309?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80)">
        </div>
        <div class="card__content">
          <p class="card__category">Category</p>
          <h3 class="card__heading">Example Card Heading</h3>
        </div>
      </a>
      <a class="card" href="#">
        <div class="card__background"
          style="background-image: url(https://images.unsplash.com/photo-1557187666-4fd70cf76254?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)">
        </div>
        <div class="card__content">
          <p class="card__category">Category</p>
          <h3 class="card__heading">Example Card Heading</h3>
        </div>
      </a>
      <a class="card" href="#">
        <div class="card__background"
          style="background-image: url(https://images.unsplash.com/photo-1556680262-9990363a3e6d?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)">
        </div>
        <div class="card__content">
          <p class="card__category">Category</p>
          <h3 class="card__heading">Example Card Heading</h3>
        </div>
        </li>
        <a class="card" href="#">
          <div class="card__background"
            style="background-image: url(https://images.unsplash.com/photo-1557004396-66e4174d7bf6?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=60)">
          </div>
          <div class="card__content">
            <p class="card__category">Category</p>
            <h3 class="card__heading">Example Card Heading</h3>
          </div>
        </a>
        <div>
  </section>
</body>

</html>